body {
    padding-top: 120px;
    padding-left: 400px;
    background-color: #eee;
}
.title{
    margin-left: 280px;
}
#user_name_result{
    height: 34px;
}
#error_info{
    color: red;
    font-size: 15px;
    font-weight: bold;
}